Don’t Let “Bursting Lines” Ruin Your Premium Packaging
Created on 03.23
You spend time designing beautiful packaging.
Perfect colors. Elegant texture. Premium printing.
But after die-cutting or folding, cracks appear along the fold lines.
In the printing and packaging industry, we often call this “bursting lines.”
It’s a small detail — but it can instantly downgrade the perceived quality of luxury packaging, hang tags, or premium paper products.
So how can we reduce this risk when choosing specialty paper?
Here are 3 key indicators worth paying attention to:
1️⃣ Folding Endurance
Good specialty paper should maintain clean folds without fiber cracking.
Strong fiber bonding helps paper perform better during creasing, folding, and die-cutting, which is especially important for hang tags, rigid packaging, and thick paper cards.
2️⃣ Fiber Quality
The pulp composition matters more than many people realize.
Papers made with high-quality chemical wood pulp usually offer better flexibility and strength, which helps prevent cracking when folding or creasing.
3️⃣ Thickness Structure (Not Just GSM)
Many buyers focus only on GSM, but paper thickness and bulk structure also affect folding performance.
Two papers with the same grammage may behave very differently during converting.
A well-balanced structure allows paper to crease smoothly without damaging the surface fibers.
✨ In premium packaging, small details make a big difference.
Choosing the right paper is not only about texture or color — it’s also about how the paper performs during production.
Out of curiosity:
Have you ever experienced bursting lines during printing or die-cutting?
Would love to hear how your team solved it.
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